ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
Synthesis and Properties of (Phthalocyaninato)cobalt(II) Adducts with Nitrogen Bases(α-) and (β-phthalocyaninato)cobalt(II) (PcCo) are treated with ligands L=pyrazine (pyz), 4-methylpyrazine (4-mepyz), pyridine (py), pyridine-d5 (py-d5) 4,4′-bipyridine (bpy), and n-butylamine (bu). The PcCo adducts PcCoL obtained (L=pyz, mepyz, me2pyz, Clpyz, py, py-d5, bu); PcCo-L-CoPc (L=bpy), [PcCoL]n (L=pyz); PcCoL2 (L=pyz, py, py-d5, pip, bpy), are characterized by ESR spectroscopy, thermal and magnetic measurements. Pentacoordinated complexes PcCoL are formed preferentially. Hexacoordinated complexes PcCoL2 with L=py, 4-mepy, bpy, pyz, piperidine (pip) are only formed at a high ligand concentration. While the polymer [PcCo(pyz)]n was isolated as a stable compound, attempts to obtain [PcCo(bpy)]n were unsuccessful. With 1,4-diazabicyclo[2.2.2]octane (dabco), a strong σ-donor ligand, [PcCo(dabco)]n is easily formed. In addition, the reaction of PcCo with 1,6-naphthyridine (naph), benzyl isocyanide (bzNC), and 1,4-diisocyanobenzene (dib) was also investigated.
Notes:
(α-) und (β-Phthalocyaninato)cobalt(II) (PcCo) reagiert mit Liganden L=Pyrazin (pyz), 4-Methylpyrazin (4-mepyz), Pyridin (py), Pyridin-d5 (py-d5), 4,4′-Bipyridin (bpy) und n-Butylamin (bu) zu den PcCo-Addukten PcCoL (L=pyz, mepyz, me2pyz, Clpyz, py, py-d5, bu); PcCo-L-CoPc (L=bpy), [PcCoL]n (L=pyz); PcCoL2 (L=pyz, py, py-d5, pip, bpy), welche durch ESR-Spektroskopie sowie durch thermische und magnetische Messungen charakterisiert werden. Bevorzugt werden die pentakoordinierten Komplexe PcCoL gebildet. Hexakoordinierte Komplexe PcCoL2 mit L=py, 4-mepy, bpy, pyz, Piperidin (pip) werden nur bei hoher Ligandenkonzentration erhalten. [PcCo(pyz)]n wird als stabile Verbindung isoliert; Versuche, [PcCo(bpy)]n zu gewinnen, waren nicht erfolgreich. Mit 1,4-Diazabicyclo[2.2.2]octan (dabco), einem vergleichsweise starken σ-Donorliganden, bildet sich die entsprechende verbrückte Verbindung [PcCo(dabco)]n leicht. Zusätzlich werden die Reaktionen von PcCo mit 1,6-Naphthyridin (naph), Benzylisocyanid (bzNC) und 1,4-Diisocyanobenzol (dib) untersucht.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19871200808
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